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// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#ifndef __TLSDATA_H__
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#define __TLSDATA_H__
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/**
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@internalComponent
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@file
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Comments : definition of the thread local storage data structure,
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and the global access pointer.
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*/
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#include <ecom/ecom.h>
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//Forward declarations
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class CLoadManager;
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class CGlobalData;
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/**
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CGlobalData class controls the life time of a single CEComSession instance and
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single CLoadManager instance. It works in a close cooperation with REComSession class.
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The life time of the CGlobalData singleton instance will be controlled by the following
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static and non-static methods of REComSession:
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1) REComSession::OpenL() (static method).
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CGlobalData singleton instance, so the CEComSession instance and CLoadManager instance,
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will be created during the first successfull call of REComSession::OpenL().
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Each next REComSession::OpenL() call will not create new CGlobalData instance,
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it will just increment the reference count of the already created singleton.
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2) REComSession::Close() (non-static method).
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It will not destroy the created CGlobalData singleton, it will just decrement its
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reference count.
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3) REcomSession::FinalClose() (static method).
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It will check the reference count of CGlobalData singleton and if it is less or equal to
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0, then CGlobalData singleton, so the CEComSession instance and CLoadManager instance,
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will be destroyed.
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@internalComponent
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*/
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NONSHARABLE_CLASS(CGlobalData) : public CBase
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{
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public:
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static CGlobalData* NewL();
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static CGlobalData* Instance();
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virtual ~CGlobalData();
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inline TInt IncRefCnt();
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inline TInt DecRefCnt();
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inline TInt RefCnt() const;
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inline REComSession& EComSession();
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inline CLoadManager& LoadManager();
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private:
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CGlobalData();
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void ConstructL();
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private:
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/** The overall count of successfull REComSession::OpenL() calls. */
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TInt iRefCount;
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/** The single REComSession instance */
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REComSession iEComSession;
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/** Handles the loading of the dlls and the deletion of objects */
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CLoadManager* iLoadManager;
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};
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/**
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Increments the reference count of CGlobalData object.
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It should be called for every successfull call of REComSession::OpenL().
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@return Reference count value after the increment.
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*/
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inline TInt CGlobalData::IncRefCnt()
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{
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return ++iRefCount;
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}
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/**
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Decrements the CGlobalData object's reference count.
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It should be called from REComSession::Close().
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@return Reference count value after the decrement.
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*/
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inline TInt CGlobalData::DecRefCnt()
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{
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return --iRefCount;
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}
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/**
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It is used in REComSession::FinalClose().
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@return Reference count value.
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*/
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inline TInt CGlobalData::RefCnt() const
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{
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return iRefCount;
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}
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/**
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@return A reference to the controlled REComSession object.
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*/
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inline REComSession& CGlobalData::EComSession()
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{
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return iEComSession;
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}
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/**
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@return A reference to the controlled CLoadManager object.
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*/
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inline CLoadManager& CGlobalData::LoadManager()
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{
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return *iLoadManager;
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}
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#endif //__TLSDATA_H__
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